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Turning Machnef l Patnted Dec. 4, 1866.

No. 60,259. l

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N PETERS. PHOTO-uTMoQRAFMER. WASHINGTON` u C.

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IMPROVEMENTS IN MAGHINES FOB. TURNING SHAITING.

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TO ALL VHEOM IT MAY CONCERN:

Be it known that I, ROBERT SAFELY, of Cohoes, Albany county, State of VNew York, have invented a new and improved Machine for Turning and Finishing Shafting; and Ido hereby declare that thefollowing is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part` of this speciiication, in which-- Figure 1 is a front elevation of theimprovcd machine. Figure 2 is a section taken through fig. 1, at the point indicated by red lines a' 9;. Figure 3 is a horizontal section through the machine, taken above the lcutters. Similar letters of reference indicate corresponding parts in the several gures. The object of this invention is to obtain a machine which will turn and finish shafting in a much better and more expeditious manner, andwith less labor to the attendant, than hitherto. It consists in so constructing such machine that there will be no liability nor tendency of theshaft sagging during the operation` of turning and finishing, the shaft being arranged in the machine in an upright or vertical position, instead of a horizontal position as heretofore, as will be hereinafter described. i

To enable others skilled in the art to understand my invention, I will describe its construction and operation.

In the accompanying drawings,A represents the frame of the machine, which consists of two strong uprights which are'sccurely held by means of a horizontal base plate andatop plate, through the centre of which are vertical holes forthe passage of 'the shafts through the machine. "The lower central hole througlrthe base plate is of such sir/.e as to admit of the passage through it of the shaft chips, or ffturnings, and water. yC represents a horizontal support, which receives a vertical movement from the'feed-screw D, which screw carries on its upper end a tangent-wheel, a, that is rotated by means of the worm a. on the upper horizontal shaft, E.` The screw,

- D, communicates a slow downward movement to the cross-bar or support, C, to which latter the shaft,`S, `to be i.

turned is clamped by means of a screw', b, iig. 2. The ends of the shaft support, C, are guided by means of tenons on the inside surfaces of the frame standards, as shown in figs. 1 and 3. E represents a horizontal support for the tool-chuck, F, which latter is fastened by means of screws to the tangent-wheel, G, that engages with and receives a rotary motion from the worm, c, on the horizontal shaft, H. The chuck, I", is composed of a top plate, having a central vertical hole through it, the screws of which serve to conine the tools that are usedto finish the shaft. These cutters, three in number, radiate from the centre of 'the chuck, and their cutting ends are made concave or concenrric to the axis of thc shaft which they are employed to turn and finish; The cutting i ends of these tools take off the superfiuous metal from the shaft, at the same-time finishing it with a waterpolish. The tan gent-wheel, to which the cutters are secured, has a long hub or collar formed on its lower surface, which hasn hole through it of suthcient size to lallow of the escape of chips and water from the cutters. This tubular collar has its bearings 4in the supporting cross-plate, E, and is provided on its lower end with a collar, e, by the" removal of which the tangent-wheel and its attachment can be detached from the machines.

In turning and inishin g shafting,` the shaft, after it is straightened, is put into a common horizontalengine lathe and centred true, then a cut is taken from it with a diamond-point tool, to make it perfectly cylindrical; the shaft is then doctored, to make ituniform in size. The shaft being in a horizontal position sags by its, own weight, and springs away from the tool by its elasticity and resistance to the too'l. To partiallycorrect' this tendency the follower rest is used, as is also the centre rest, but these attachmentsinvolve a loss of time, and areotherwise very objectionable. By my machine I completely obviate all diliiculties, and am enabled to turn and finish shafting with much greater speed and accuracy. The shaft in my machine` is not,` and does not require to be centered, but is placed vertically, and thus obviates the necessity of a centre rest.` i

The operation of turning and doctoring is performed bythe saine tools and at the same time, thus eifecting a great saving in time and material. Instead of holding the shaft stationary` by the support, C, and having `.thel

chuck to rotate, the same result'might be accomplished by having the chuck stationary and rotating the shaft:`

during the turning and finishing of it. l

Having thus described my invention, whatl I claim as new, and desire to secure by Letters Patent, is- '.1. An improved machine which is adapted for turning and finishing shafts when they are supported in an upright position, said machine being constructed and operating substantially-as herein specified. i

2.' The combination of the horizontal chuck support E, and sliding shaft holder C, with.devicesforfceding i turning, and finishing shafts that are arranged in an upright or verticalposition, substantially as described.`

ROBERT sArnLY.

Witnesses:

E. W. FULLER, Guo. P. Srnnivnncn. 

